mirror of https://github.com/google/oss-fuzz.git
56 lines
1.5 KiB
Python
56 lines
1.5 KiB
Python
#!/usr/bin/python3
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# Copyright 2022 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import atheris
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import sys
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import mock
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with atheris.instrument_imports():
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from google.cloud.storage.fileio import BlobReader
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global_data = None
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def TestOneInput(data):
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global_data = data
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fdp = atheris.FuzzedDataProvider(data)
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blob = mock.Mock()
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def read_fuzz_data(start=0, end=None, **_):
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return global_data[start:end]
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blob.download_as_bytes = mock.Mock(side_effect=read_fuzz_data)
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blob.size = len(data)
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blob.chunk_size = None
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download_kwargs = {"if_metageneration_match": 1}
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reader = BlobReader(blob, **download_kwargs)
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try:
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reader.read(fdp.ConsumeIntInRange(0, len(data)*2))
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except UnicodeDecodeError:
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return
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reader.seek(
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pos = fdp.ConsumeIntInRange(0, len(data)*2),
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whence = fdp.ConsumeIntInRange(0, 2)
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)
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def main():
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atheris.instrument_all()
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atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True)
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atheris.Fuzz()
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if __name__ == "__main__":
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main()
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